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S3G Reactor
The S3G reactor is a naval reactor used by the United States Navy to provide electricity generation and propulsion on warships. The S3G designation stands for: * S = Submarine platform * 3 = Third generation core designed by the contractor * G = General Electric was the contracted designer Design This nuclear reactor generates 78 MW. It consists of a highly enriched uranium core with a 2-loop pressurized water reactor. History This design, designated as S4G, was used for the two reactors on the USS ''Triton'' (SSRN-586); no other ships used this reactor plant. The plant had unique design features such as horizontal steam generator U-tubes, and it was one of the only submarine plants with a deaereating feed tank (DFT). A prototype reactor was built ashore at Knolls Atomic Power Laboratory's Kesselring Site in West Milton, New York in 1958 to test the reactor design. Once the design was proven, the prototype continued operation to train students and test new systems a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
United States Naval Reactor
United States naval reactors are nuclear reactors used by the United States Navy aboard certain ships to generate the steam used to produce Power (physics), power for Marine nuclear propulsion, propulsion, electric power, catapulting airplanes in aircraft carriers, and a few more minor uses. Such naval nuclear reactors have a complete power plant associated with them. All U.S. Navy submarines and supercarriers built since 1975 are Nuclear power, nuclear-powered by such reactors. There are no commissioned conventional (non-nuclear) submarines or aircraft carriers left in the U.S. Navy, since the last conventional carrier, , was decommissioned in May 2009. The U.S. Navy had nine nuclear-powered cruisers with such reactors also, but they have since been decommissioned. Reactors are designed by a variety of contractors, then developed and tested at one of several government (United States Department of Energy, Department of Energy) owned and prime contractor-operated facilities: Be ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Enriched Uranium
Enriched uranium is a type of uranium in which the percent composition of uranium-235 (written 235U) has been increased through the process of isotope separation. Naturally occurring uranium is composed of three major isotopes: uranium-238 (238U with 99.2739–99.2752% natural abundance), uranium-235 (235U, 0.7198–0.7202%), and uranium-234 (234U, 0.0050–0.0059%). 235U is the only nuclide existing in nature (in any appreciable amount) that is fissile with thermal neutrons. Enriched uranium is a critical component for both civil nuclear power generation and military nuclear weapons. The International Atomic Energy Agency attempts to monitor and control enriched uranium supplies and processes in its efforts to ensure nuclear power generation safety and curb nuclear weapons proliferation. There are about 2,000 tonnes of highly enriched uranium in the world, produced mostly for nuclear power, nuclear weapons, naval propulsion, and smaller quantities for research reactors ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
S5W Reactor
The S5W reactor is a nuclear reactor used by the United States Navy to provide electricity generation and propulsion on warships. The S5W designation stands for: * S = Submarine platform * 5 = Fifth generation core designed by the contractor * W = Westinghouse was the contracted designer History The S5W was the standard reactor for submarines of the United States Navy from its first use in 1959 on until the introduction of the s with S6G reactor in the mid-1970s. One S5W plant was also used in the United Kingdom on the Royal Navy's first nuclear-powered submarine . Some time before 1971, the S5W vessel and core replaced the S1W reactor vessel and core at the S1W prototype facility. Even though operating an S5W reactor core, the facility continued to be called S1W. To use the additional power generated by the S5W reactor at higher power levels, steam dumps were constructed in the same S1W building but outside the original submarine style hull. , one S5W reactor plant remains ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Milton (town), New York
Milton is a town in Saratoga County, New York, United States. The population was 17,103 at the 2000 census. Some believe that the town was named after the poet, John Milton, while other sources state that it is a shortening of "Mill-town" for the early mill activity. Milton is an interior town in the central part of the county. It is southwest of Saratoga Springs. History This region was part of the Kayaderossera patent of 1708. The town was first settled around 1772. The town of Milton was established in 1792 from part of the town of Ballston. In 1793, part of the town was taken to form part of the town of Greenfield. In 1807, part of Milton was lost when Ballston Spa became an incorporated village. In the mid-to-late-19th century, the Town of Milton was the site of numerous manufacturing concerns. The most famous was the paper mills of "Paper Bag King" George West, who invented a line of square-bottomed paper bags and sold them by the millions soon after the American ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Knolls Atomic Power Laboratory
Knolls Atomic Power Laboratory (KAPL) is an American research and development facility based in Niskayuna, New York and dedicated to the support of the US Naval Nuclear Propulsion Program. KAPL was instituted in 1946 under a contract between General Electric and the United States government. In the 21st century, KAPL is a government-owned, contractor-operated laboratory for the US Department of Energy. KAPL is responsible for the research, design, construction, operation, and maintenance of U.S. nuclear-powered warships. It also manages work on nuclear ships at numerous shipyards across the country. History On May 15, 1946, KAPL began with a contract between General Electric and the U.S. Government to conduct nuclear research and development, including the generation of electricity from nuclear energy. In 1950, the nuclear power plant project was converted to a Naval Nuclear Propulsion project. Several years later Knolls' work joined that of Bettis Atomic Power Laboratory, the Ar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Deaereating Feed Tank
{{Unreferenced, date=June 2011 A deaerating feed tank (DFT), often found in steam plants that propel ships, is located after the main condensate pump and before the main feed booster pump. It has these three purposes: # Remove dissolved oxygen (“air”) from the condensate # Pre-heat the feedwater # Provide a storage/surge volume Based on the relevant theoretical Rankine cycle diagram, there are four main processes, or steps: : 1 to 2 Water pressure is raised from low to high (pump work in) (feedwater pump) : 2 to 3 Water is heated to boiling (heat input) (steam generator) : 3 to 4 Steam is expanded in the turbine (work out) (turbine) : 4 to 1 Wet vapor is condensed (condensing) (surface condenser) In the practical implementation of a Rankine cycle, it is common to break the single pump (process 1 to 2) into three pumps: (in water flow order: condensate pump, feed booster pump and then feedwate ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
USS Triton (SSRN-586)
USS ''Triton'' (SSRN/SSN-586), the only member of her class, was a nuclear powered radar picket submarine in the United States Navy. She had the distinction of being the only Western submarine powered by two nuclear reactors. ''Triton'' was the second submarine and the fourth vessel of the United States Navy to be named for the Greek god Triton, (the nomenclature being unusual at the time in that U.S. Navy submarines were usually named for various species of fish.) At the time of her commissioning in 1959, ''Triton'' was the largest, most powerful, and most expensive submarine ever built at $109 million (equivalent to $ million in ) excluding the cost of nuclear fuel and reactors. In early 1960, the boat became the first vessel to execute a submerged circumnavigation of the Earth in Operation Sandblast. ''Triton'' accomplished this objective during her shakedown cruise while under the command of Captain Edward L. "Ned" Beach Jr. ''Triton''s mission as a radar pick ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pressurized Water Reactor
A pressurized water reactor (PWR) is a type of light-water reactor, light-water nuclear reactor. PWRs constitute the large majority of the world's nuclear power plants (with notable exceptions being the UK, Japan and Canada). In a PWR, the primary nuclear reactor coolant, coolant (water) is pumped under high pressure to the reactor core where it is heated by the energy released by the Nuclear fission, fission of atoms. The heated, high pressure water then flows to a Water-tube boiler, steam generator, where it transfers its thermal energy to lower pressure water of a secondary system where steam is generated. The steam then drives turbines, which spin an electric generator. In contrast to a boiling water reactor (BWR), pressure in the primary coolant loop prevents the water from boiling within the reactor. All light-water reactors use ordinary water as both coolant and neutron moderator. Most use anywhere from two to four vertically mounted steam generators; VVER reactors use horizo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Megawatts
The watt (symbol: W) is the unit of power or radiant flux in the International System of Units (SI), equal to 1 joule per second or 1 kg⋅m2⋅s−3. It is used to quantify the rate of energy transfer. The watt is named after James Watt (1736–1819), an 18th-century Scottish inventor, mechanical engineer, and chemist who improved the Newcomen engine with his own steam engine in 1776. Watt's invention was fundamental for the Industrial Revolution. Overview When an object's velocity is held constant at one metre per second against a constant opposing force of one newton, the rate at which work is done is one watt. : \mathrm In terms of electromagnetism, one watt is the rate at which electrical work is performed when a current of one ampere (A) flows across an electrical potential difference of one volt (V), meaning the watt is equivalent to the volt-ampere (the latter unit, however, is used for a different quantity from the real power of an electrical circuit). : \mathr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
United States Navy
The United States Navy (USN) is the maritime service branch of the United States Armed Forces and one of the eight uniformed services of the United States. It is the largest and most powerful navy in the world, with the estimated tonnage of its active battle fleet alone exceeding the next 13 navies combined, including 11 allies or partner nations of the United States as of 2015. It has the highest combined battle fleet tonnage (4,635,628 tonnes as of 2019) and the world's largest aircraft carrier fleet, with eleven in service, two new carriers under construction, and five other carriers planned. With 336,978 personnel on active duty and 101,583 in the Ready Reserve, the United States Navy is the third largest of the United States military service branches in terms of personnel. It has 290 deployable combat vessels and more than 2,623 operational aircraft . The United States Navy traces its origins to the Continental Navy, which was established during the American Revo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nuclear Reactor
A nuclear reactor is a device used to initiate and control a fission nuclear chain reaction or nuclear fusion reactions. Nuclear reactors are used at nuclear power plants for electricity generation and in nuclear marine propulsion. Heat from nuclear fission is passed to a working fluid (water or gas), which in turn runs through steam turbines. These either drive a ship's propellers or turn electrical generators' shafts. Nuclear generated steam in principle can be used for industrial process heat or for district heating. Some reactors are used to produce isotopes for medical and industrial use, or for production of weapons-grade plutonium. , the International Atomic Energy Agency reports there are 422 nuclear power reactors and 223 nuclear research reactors in operation around the world. In the early era of nuclear reactors (1940s), a reactor was known as a nuclear pile or atomic pile (so-called because the graphite moderator blocks of the first reactor were placed into a tall pi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
General Electric
General Electric Company (GE) is an American multinational conglomerate founded in 1892, and incorporated in New York state and headquartered in Boston. The company operated in sectors including healthcare, aviation, power, renewable energy, digital industry, additive manufacturing and venture capital and finance, but has since divested from several areas, now primarily consisting of the first four segments. In 2020, GE ranked among the Fortune 500 as the 33rd largest firm in the United States by gross revenue. In 2011, GE ranked among the Fortune 20 as the 14th most profitable company, but later very severely underperformed the market (by about 75%) as its profitability collapsed. Two employees of GE – Irving Langmuir (1932) and Ivar Giaever (1973) – have been awarded the Nobel Prize. On November 9, 2021, the company announced it would divide itself into three investment-grade public companies. On July 18, 2022, GE unveiled the brand names of the companies it will ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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